1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x763469bc4ea43eed89ace78bea5db6088e1506bea05ace4a8b2f2068d94878cf. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8bd991f2-6d30-48d1-bddd-c229cac13187.json and https://artists.proofprofile.net/proofs/artist/8bd991f2-6d30-48d1-bddd-c229cac13187.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8efdb103cb7757a0ad8f15fdd590ae30ccbaa3e43088a3b737a5e33b9cb80032. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:16:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA082205472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3791cd1221ad19d0b5d8554dd4f24eb870d7616f0d70b7aed8c79307015ff46c. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR2X42376281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbed96c027f5bb74ceb6ba031d15f60cac4f8a18b39941dbc94de25102d5ca9f1. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX282305726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbed96c027f5bb74ceb6ba031d15f60cac4f8a18b39941dbc94de25102d5ca9f1. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX282305726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3791cd1221ad19d0b5d8554dd4f24eb870d7616f0d70b7aed8c79307015ff46c. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR2X42376281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf28984f6094137667b57411d64f66b53942c969835865554b21f782c01bb70f5. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR10S2435873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dd21dce2b3c37e193652755dc6f18132ceb62e9f3bbac8298ed4ab6338c34ce. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR10S2435874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c96a0939660bfa206ff2e8b3041a3d19dc3c8d9fd69e958177f682284b6f211. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR10S2435875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ae7763b2023f3beac7569c87c9c780004fad7213a321eacbf98a2cd410da196. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:34:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR10S2435876.